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Therapeutic in vivo synthetic chemistry using an artificial metalloenzyme with glycosylated human serum albumin. Adv Carbohydr Chem Biochem 2022; 82:11-34. [PMID: 36470648 DOI: 10.1016/bs.accb.2022.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The concept of "therapeutic in vivo synthetic chemistry" refers to chemical synthesis in living systems using new-to-nature reactions for the treatment or diagnosis of diseases. This review summarizes our development of therapeutic in vivo synthetic chemistry using glycan-modified human serum albumin (glycoHSA) and utilizing the selective glycan-targeting and metal protective effects of metal catalysts. The four artificial metalloenzymes with glycoHSA provided good cancer treatment results based on on-site drug synthesis and selective cell-tagging strategies. Thus, we propose that therapeutic in vivo synthetic chemistry using glycoHSA as a new modality of therapy or diagnosis is applicable to a wide range of diseases.
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Tanaka K, Vong K. The Journey to In Vivo Synthetic Chemistry: From Azaelectrocyclization to Artificial Metalloenzymes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200180] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Katsunori Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8552, Japan
- Biofunctional Synthetic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama 351-0198, Japan
- Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, Russia
- GlycoTargeting Research Laboratory, RIKEN Baton Zone Program, Wako, Saitama 351-0198, Japan
| | - Kenward Vong
- Biofunctional Synthetic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama 351-0198, Japan
- GlycoTargeting Research Laboratory, RIKEN Baton Zone Program, Wako, Saitama 351-0198, Japan
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Affiliation(s)
- Christin Bednarek
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Ilona Wehl
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Nicole Jung
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
- Institute of Biological and Chemical Systems—Functional Molecular Systems, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Ute Schepers
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
- Institute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Stefan Bräse
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
- Institute of Biological and Chemical Systems—Functional Molecular Systems, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
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Ogura A, Tahara T, Nozaki S, Onoe H, Kurbangalieva A, Watanabe Y, Tanaka K. Glycan multivalency effects toward albumin enable N-glycan-dependent tumor targeting. Bioorg Med Chem Lett 2016; 26:2251-4. [DOI: 10.1016/j.bmcl.2016.03.046] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/05/2016] [Accepted: 03/14/2016] [Indexed: 11/28/2022]
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Ogura A, Tahara T, Nozaki S, Morimoto K, Kizuka Y, Kitazume S, Hara M, Kojima S, Onoe H, Kurbangalieva A, Taniguchi N, Watanabe Y, Tanaka K. Visualizing Trimming Dependence of Biodistribution and Kinetics with Homo- and Heterogeneous N-Glycoclusters on Fluorescent Albumin. Sci Rep 2016; 6:21797. [PMID: 26902314 PMCID: PMC4763176 DOI: 10.1038/srep21797] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/01/2016] [Indexed: 12/19/2022] Open
Abstract
A series of N-glycans, each sequentially trimmed from biantennary sialoglycans, were homo- or heterogeneously clustered efficiently on fluorescent albumin using a method that combined strain-promoted alkyne-azide cyclization and 6π-azaelectrocyclization. Noninvasive in vivo kinetics and dissection analysis revealed, for the first time, a glycan-dependent shift from urinary to gall bladder excretion mediated by sequential trimming of non-reducing end sialic acids. N-glycoalbumins that were trimmed further, in particular, GlcNAc- and hybrid biantennary-terminated congeners, were selectively taken up by sinusoidal endothelial and stellate cells in the liver, which are critical for diagnosis and treatment of liver fibrillation. Our glycocluster strategy can not only reveal the previously unexplored extracellular functions of N-glycan trimming, but will be classified as the newly emerging glycoprobes for diagnostic and therapeutic applications.
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Affiliation(s)
- Akihiro Ogura
- Biofunctional Synthetic Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Tsuyoshi Tahara
- RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Satoshi Nozaki
- RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Koji Morimoto
- Osaka Women's Junior College, 3-8-1 Kasugaoka, Fujiidera-shi, Osaka, 583-8558, Japan
| | - Yasuhiko Kizuka
- Disease Glycomics Team, Global Research Cluster, RIKEN-Max Planck Joint Research Center for Systems Chemical Biology, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Shinobu Kitazume
- Disease Glycomics Team, Global Research Cluster, RIKEN-Max Planck Joint Research Center for Systems Chemical Biology, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Mitsuko Hara
- Micro-Signaling Regulation Technology Unit, RIKEN Center for Life Science Technologies, Wako-shi, Saitama, 351-0198, Japan
| | - Soichi Kojima
- Micro-Signaling Regulation Technology Unit, RIKEN Center for Life Science Technologies, Wako-shi, Saitama, 351-0198, Japan
| | - Hirotaka Onoe
- RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Almira Kurbangalieva
- Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, 18 Kremlyovskaya Street, Kazan 420008, Russia
| | - Naoyuki Taniguchi
- Disease Glycomics Team, Global Research Cluster, RIKEN-Max Planck Joint Research Center for Systems Chemical Biology, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Yasuyoshi Watanabe
- RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Katsunori Tanaka
- Biofunctional Synthetic Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan.,Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, 18 Kremlyovskaya Street, Kazan 420008, Russia.,Japan Science and Technology Agency-PRESTO, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
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Tanaka K. Chemically synthesized glycoconjugates on proteins: effects of multivalency and glycoform in vivo. Org Biomol Chem 2016; 14:7610-21. [DOI: 10.1039/c6ob00788k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The biodistributions and in vivo kinetics of chemically prepared glycoconjugates on proteins are reviewed.
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Affiliation(s)
- Katsunori Tanaka
- Biofunctional Synthetic Chemistry Laboratory
- RIKEN
- Wako-shi
- Japan
- Biofunctional Chemistry Laboratory
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7
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Ogura A, Tanaka K. Azaelectrocyclization on cell surface: convenient and general approach to chemical biology research. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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Kim JC, Tae G. Recent Advances in Cell surface Engineering Focused on Cell Therapy. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jong Chul Kim
- School of Materials Science and Engineering; Gwangju Institute of Science and Technology; Gwangju 500-712 Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering; Gwangju Institute of Science and Technology; Gwangju 500-712 Republic of Korea
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Tanaka K, Kitadani M, Tsutsui A, Pradipta AR, Imamaki R, Kitazume S, Taniguchi N, Fukase K. A cascading reaction sequence involving ligand-directed azaelectrocyclization and autooxidation-induced fluorescence recovery enables visualization of target proteins on the surfaces of live cells. Org Biomol Chem 2014; 12:1412-8. [PMID: 24435553 DOI: 10.1039/c3ob42267d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A general probe designed to induce a cascading sequence of reactions on a target protein was efficiently synthesized. The cascading reaction sequence involved (i) ligand-directed azaelectrocyclization with lysine and (ii) the autooxidation-induced release of a fluorescence quencher from the labeled protein. The probe was linked to a cyclic RGDyK peptide to enable the selective visualization of integrin αVβ3 on the surfaces of live cells.
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Affiliation(s)
- Katsunori Tanaka
- Biofunctional Synthetic Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan.
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11
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In vivo kinetics and biodistribution analysis of neoglycoproteins: effects of chemically introduced glycans on proteins. Glycoconj J 2014; 31:273-9. [DOI: 10.1007/s10719-014-9520-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 03/12/2014] [Accepted: 03/17/2014] [Indexed: 12/15/2022]
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12
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Tanaka K, Fukase K. Chemical Approach to a Whole Body Imaging of Sialo-N-Linked Glycans. Top Curr Chem (Cham) 2014; 367:201-30. [PMID: 25971916 DOI: 10.1007/128_2014_603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
PET and noninvasive fluorescence imaging of the sialo-N-linked glycan derivatives are described. To establish the efficient labeling protocol for N-glycans and/or glycoconjugates, new labeling probes of fluorescence and ⁶⁸Ga-DOTA, as the positron emission nucleus for PET, through rapid 6π-azaelectrocyclization were designed and synthesized, (E)-ester aldehydes. The high reactivity of these probes enabled the labeling of lysine residues in peptides, proteins, and even amino groups on the cell surfaces at very low concentrations of the target molecules (~10⁻⁸ M) within a short reaction time (~5 min) to result in "selective" and "non-destructive" labeling of the more accessible amines. The first MicroPET of glycoproteins, ⁶⁸Ga-DOTA-orosomucoid and asialoorosomucoid, successfully visualized the differences in the circulatory residence of glycoproteins, in the presence or absence of sialic acids. In vivo dynamics of the new N-glycoclusters, prepared by the "self-activating" Huisgen cycloaddition reaction, could also be affected significantly by their partial structures at the non-reducing end, i.e., the presence or absence of sialic acids, and/or sialoside linkages to galactose. Azaelectrocyclization chemistry is also applicable to the engineering of the proteins and/or the cell surfaces by the oligosaccharides; lymphocytes chemically engineered by sialo-N-glycan successfully target the tumor implanted in BALB/C nude mice, detected by noninvasive fluorescence imaging.
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Affiliation(s)
- Katsunori Tanaka
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan,
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Tanaka K, Moriwaki K, Yokoi S, Koyama K, Miyoshi E, Fukase K. Whole-body imaging of tumor cells by azaelectrocyclization: Visualization of metastasis dependence on glycan structure. Bioorg Med Chem 2013; 21:1074-7. [DOI: 10.1016/j.bmc.2013.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 01/03/2013] [Accepted: 01/04/2013] [Indexed: 12/29/2022]
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Watanabe Y. Molecular Imaging-based Early-Phase and Exploratory Clinical Research. YAKUGAKU ZASSHI 2013; 133:187-95. [DOI: 10.1248/yakushi.12-00246-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yasuyoshi Watanabe
- RIKEN Center for Molecular Imaging Science
- Department of Physiology, Osaka City University Graduate School of Medicine
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Tanaka K, Nakamoto Y, Siwu ERO, Pradipta AR, Morimoto K, Fujiwara T, Yoshida S, Hosoya T, Tamura Y, Hirai G, Sodeoka M, Fukase K. Development of bis-unsaturated ester aldehydes as amino-glue probes: sequential double azaelectrocyclization as a promising strategy for bioconjugation. Org Biomol Chem 2013; 11:7326-33. [DOI: 10.1039/c3ob41507d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Fukase K, Tanaka K. Bio-imaging and cancer targeting with glycoproteins and N-glycans. Curr Opin Chem Biol 2012. [DOI: 10.1016/j.cbpa.2012.09.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Tanaka K, Siwu ER, Hirosaki S, Iwata T, Matsumoto R, Kitagawa Y, Pradipta AR, Okumura M, Fukase K. Efficient synthesis of 2,6,9-triazabicyclo[3.3.1]nonanes through amine-mediated formal [4+4] reaction of unsaturated imines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.081] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Tanaka K, Fukase K. Development of Azaelectrocyclization-Based Labeling and Application to Noninvasive Imaging and Targeting Using N-Glycan Derivatives—In Pursuit of N-Glycan Functions on Proteins, Dendrimers, and Living Cells—. TRENDS GLYCOSCI GLYC 2012. [DOI: 10.4052/tigg.24.47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Tanaka K, Yokoi S, Morimoto K, Iwata T, Nakamoto Y, Nakayama K, Koyama K, Fujiwara T, Fukase K. Cell surface biotinylation by azaelectrocyclization: easy-handling and versatile approach for living cell labeling. Bioorg Med Chem 2011; 20:1865-8. [PMID: 22257530 DOI: 10.1016/j.bmc.2011.12.043] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 12/07/2011] [Accepted: 12/20/2011] [Indexed: 01/21/2023]
Abstract
Versatile method for living cell labeling has been established. Cell surfaces are initially biotinylated by azaelectrocyclization, and then treated with the fluorescence-labeled avidin or the anti-biotin antibody.
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Affiliation(s)
- Katsunori Tanaka
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka-shi, Osaka 560-0043, Japan
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Discovery and application of 6π-azaelectrocyclization to natural product synthesis and synthetic biology. Sci China Chem 2011. [DOI: 10.1007/s11426-011-4466-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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van Berkel SS, van Eldijk MB, van Hest JCM. Staudinger ligation as a method for bioconjugation. Angew Chem Int Ed Engl 2011; 50:8806-27. [PMID: 21887733 DOI: 10.1002/anie.201008102] [Citation(s) in RCA: 206] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Indexed: 11/11/2022]
Abstract
In 1919 the German chemist Hermann Staudinger was the first to describe the reaction between an azide and a phosphine. It was not until recently, however, that Bertozzi and co-workers recognized the potential of this reaction as a method for bioconjugation and transformed it into the so-called Staudinger ligation. The bio-orthogonal character of both the azide and the phosphine functions has resulted in the Staudinger ligation finding numerous applications in various complex biological systems. For example, the Staudinger ligation has been utilized to label glycans, lipids, DNA, and proteins. Moreover, the Staudinger ligation has been used as a synthetic method to construct glycopeptides, microarrays, and functional biopolymers. In the emerging field of bio-orthogonal ligation strategies, the Staudinger ligation has set a high standard to which most of the new techniques are often compared. This Review summarizes recent developments and new applications of the Staudinger ligation.
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Affiliation(s)
- Sander S van Berkel
- Department of Bioorganic Chemistry, Radboud University Nijmegen, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands
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van Berkel SS, van Eldijk MB, van Hest JCM. Staudinger-Ligation als Methode zur Biokonjugation. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201008102] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Tanaka K, Kitadani M, Fukase K. Target-selective fluorescent "switch-on" protein labeling by 6π-azaelectrocyclization. Org Biomol Chem 2011; 9:5346-9. [PMID: 21691664 DOI: 10.1039/c1ob05320e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Application of azaelectrocyclization and FRET techniques to lysine groups enabled the selective and sensitive detection of a target protein from a mixture, with high fluorescence contrast.
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Affiliation(s)
- Katsunori Tanaka
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka-shi, Osaka 560-0043, Japan.
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Tanaka K, Siwu ERO, Minami K, Hasegawa K, Nozaki S, Kanayama Y, Koyama K, Chen WC, Paulson JC, Watanabe Y, Fukase K. Noninvasive imaging of dendrimer-type N-glycan clusters: in vivo dynamics dependence on oligosaccharide structure. Angew Chem Int Ed Engl 2011; 49:8195-200. [PMID: 20857462 DOI: 10.1002/anie.201000892] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Katsunori Tanaka
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka-shi, Osaka 560-0043, Japan
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Tanaka K. Exploring A Unique Reactivity of 6π-Azaelectrocyclization: Discovery and Application to Natural Products Synthesis and Synthetic Chemical Biology. J SYN ORG CHEM JPN 2011. [DOI: 10.5059/yukigoseikyokaishi.69.1389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Katsunori Tanaka
- Department of Chemistry, Graduate School of Science, Osaka University
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Tanaka K, Siwu ERO, Minami K, Hasegawa K, Nozaki S, Kanayama Y, Koyama K, Chen WC, Paulson JC, Watanabe Y, Fukase K. Noninvasive Imaging of Dendrimer-Type N-Glycan Clusters: In Vivo Dynamics Dependence on Oligosaccharide Structure. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000892] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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